[AGW16] High resolution kilometric range optical telemetry in air by radio frequency phase measurement
Revue Internationale avec comité de lecture :
Journal Review of Scientific Instruments,
vol. 87(7),
pp. 075105,
2016, (
doi:
10.1063/1.4954180)
Mots clés: photodiodes laser telemeter long distance
Résumé:
We have developed an optical Absolute Distance Meter (ADM) based on the measurement of the phase accumulated by a
Radio Frequency (RF) wave during its propagation in the air by a laser beam. In this article, the ADM principle will be
described and the main results presented. In particular, we will emphasize how the choice of an appropriate photodetector can
significantly improve the telemeter performances by minimizing the amplitude to phase conversion. Our prototype, tested in
the field, has proven its efficiency with a resolution better than 15 μm for a measurement time of 10 ms and distances up to
1.2 km.